Low-stress line workpiece and method for integrally forming the same

A low-stress line workpiece formed by in-mold forming, and said low-stress line workpiece comprising:

• a three-dimension (3D) curved-surface plastic layer having a first surface and a second surface, and the 3D curved-surface plastic layer comprises polycarbonate;
• a function film located on said first surface to bond said 3D curved-surface plastic layer;
• an anti-rainbow stripe combination layer located on said second surface to bond said 3D curved-surface plastic layer, and said 3D curved-surface plastic layer is located between said function film and said anti-rainbow stripe combination layer, wherein said anti-rainbow stripe combination layer further comprises:
• a hardness layer;
• a super retardation film with one surface thereof bonded to said second surface of said 3D curved-surface plastic layer, another surface of said retardation film is provided with said hardness layer, and the super retardation film is made of polyethylene terephthalate;
• and
• a bonding layer located between said super retardation film and said second surface of said 3D curved-surface plastic layer and used to bond said super retardation film to said 3D curved-surface plastic layer;
• and
• a touch module located on a surface of said hardness layer to bond said hardness layer, and said hardness layer, said super retardation film, and said bonding layer are located between said touch module and said 3D curved-surface plastic layer.